Nice to see someone likes my charts :).For the NX1 weapons you get at Expert 3rd - 1st im not sure just got the infos somewhere. Master it should be either 12 or 15 days, if someone tells me exactly how long you get it on these ranks ill fix it :)

By applying new default (permanent) weapons in the recent update, some mastery rewards have become irrelevant. For example, what would someone do with a SCAR-M while having the normal SCAR for unlimited time?

In other words, the whole mastery system has to overgo a deep change. Maybe bring back old specials, such as the DGI-C and Enfield. It would be a blast!